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<?php
// No direct access to this file
defined('_JEXEC') or die('Restricted access');
class Com_DJImageSliderInstallerScript
{
/*
* $parent is the class calling this method.
* $type is the type of change (install, update or discover_install, not uninstall).
* preflight runs before anything else and while the extracted files are in the uploaded temp folder.
* If preflight returns false, Joomla will abort the update and undo everything already done.
*/
function preflight( $type, $parent ) {
if($type == 'update') {
$jversion = new JVersion();
if(version_compare($this->getParam('version'), '2.0', 'lt')) {
$db = JFactory::getDBO();
$db->setQuery('SELECT extension_id FROM #__extensions WHERE name = "com_djimageslider"');
$ext_id = $db->loadResult();
// adding the schema version before update to 2.0+
if($ext_id) {
$db->setQuery("INSERT INTO #__schemas (extension_id, version_id) VALUES (".$ext_id.", '1.3')");
$db->execute();
}
}
}
}
function getParam( $name ) {
$db = JFactory::getDbo();
$db->setQuery('SELECT manifest_cache FROM #__extensions WHERE name = "com_djimageslider"');
$manifest = json_decode( $db->loadResult(), true );
return $manifest[ $name ];
}
/*
* sets parameter values in the component's row of the extension table
*/
function setParams($param_array) {
if ( count($param_array) > 0 ) {
// read the existing component value(s)
$db = JFactory::getDbo();
$db->setQuery('SELECT params FROM #__extensions WHERE name = "com_djimageslider"');
$params = json_decode( $db->loadResult(), true );
// add the new variable(s) to the existing one(s)
foreach ( $param_array as $name => $value ) {
$params[ (string) $name ] = (string) $value;
}
// store the combined new and existing values back as a JSON string
$paramsString = json_encode( $params );
$db->setQuery('UPDATE #__extensions SET params = ' .
$db->quote( $paramsString ) .
' WHERE name = "com_djimageslider"' );
$db->execute();
}
}
}